
class Event(object):

    def __init__(self, start_mark = None, end_mark = None):
        self.start_mark = start_mark
        self.end_mark = end_mark



    def __repr__(self):
        attributes = [ key for key in ['anchor',
         'tag',
         'implicit',
         'value'] if hasattr(self, key) ]
        arguments = ', '.join([ ('%s=%r' % (key, getattr(self, key))) for key in attributes ])
        return ('%s(%s)' % (self.__class__.__name__, arguments))




class NodeEvent(Event):

    def __init__(self, anchor, start_mark = None, end_mark = None):
        self.anchor = anchor
        self.start_mark = start_mark
        self.end_mark = end_mark




class CollectionStartEvent(NodeEvent):

    def __init__(self, anchor, tag, implicit, start_mark = None, end_mark = None, flow_style = None):
        self.anchor = anchor
        self.tag = tag
        self.implicit = implicit
        self.start_mark = start_mark
        self.end_mark = end_mark
        self.flow_style = flow_style




class CollectionEndEvent(Event):


class StreamStartEvent(Event):

    def __init__(self, start_mark = None, end_mark = None, encoding = None):
        self.start_mark = start_mark
        self.end_mark = end_mark
        self.encoding = encoding




class StreamEndEvent(Event):


class DocumentStartEvent(Event):

    def __init__(self, start_mark = None, end_mark = None, explicit = None, version = None, tags = None):
        self.start_mark = start_mark
        self.end_mark = end_mark
        self.explicit = explicit
        self.version = version
        self.tags = tags




class DocumentEndEvent(Event):

    def __init__(self, start_mark = None, end_mark = None, explicit = None):
        self.start_mark = start_mark
        self.end_mark = end_mark
        self.explicit = explicit




class AliasEvent(NodeEvent):


class ScalarEvent(NodeEvent):

    def __init__(self, anchor, tag, implicit, value, start_mark = None, end_mark = None, style = None):
        self.anchor = anchor
        self.tag = tag
        self.implicit = implicit
        self.value = value
        self.start_mark = start_mark
        self.end_mark = end_mark
        self.style = style




class SequenceStartEvent(CollectionStartEvent):


class SequenceEndEvent(CollectionEndEvent):


class MappingStartEvent(CollectionStartEvent):


class MappingEndEvent(CollectionEndEvent):


